I’m Ahmed ELkholy and This is my Node JS Backend learning journey, this is my vjudge handle Elkholyjr and this is my codeforces name ElkholyJr.

STLs

Greedy Algorithms

Static Range Queries

Two Pointers & Binary Search

Bitmasks & Iterative Complete Search

Recursion & Backtracking

Number Theory

Sorting Algorithms

Data structures

And also I learned about other topics like this and solved a problems on them you can check my vjudge about the problems I solved